PRO 4 PLUS 5W-30 is a fully synthetic ester-based race oil, developed with professional racing teams to provide ultimate performance and protection. Its low-viscosity formula minimizes oil drag while maintaining a strong protective film on highly stressed engine components, delivering enhanced power and reliability. PRO 4 PLUS 5W-30 uses 100% synthetic ester technology to provide increased power, optimum engine protection, ultimate performance and reliability to four stroke motorcycle engines even under racing conditions.